If you have the file and are unsure what is in it, you can safely inspect it using these methods:
Since the file has an .mp4 extension, it uses the container format. This means: PM020.mp4
: For technical details (like the software used to create it), you can use MediaInfo or ExifTool to read the embedded metadata. If you have the file and are unsure
: It should be playable on most modern devices, including smartphones, PCs, and web browsers. How to Identify the Content PM020.mp4
: Digital Asset Management (DAM) systems often assign alphanumeric codes like PM020 to specific stock footage or commercial assets. 3. Technical File Characteristics
: It almost certainly contains AAC (Advanced Audio Coding) audio.